I got 2 new zoa frags from someone and they had a little hair algae on them. The seller gave me a little coral rx to dip them in when I got home. This was my first time using a dip and the seller said to use only a little so I put a little I didn’t measure maybe 2 ml in 2 cups of tank water. And I added the frags for 10 minutes. Then I rinsed them in a different container of tank water then placed them in my tank. It’s been 4 days and they have not opened since I dipped them is this normal? I have gotten other zoas the day after and didn’t dip them and they where good as soon as I put them in my tank. So I not sure if I did the dip wrong or if it’s normal for them to stay closed so long after a dip?